# Service difficulty reports: N450AN A list on [N450AN](https://openairdocs.org/aircraft/N450AN.md). Matched to this aircraft by N-number and event date, checked against the reported serial number, make and model. Newest first. - [SDR AALA202610055613](https://openairdocs.org/sdr/AALA202610055613.md): Battery · no test · Oct 1, 2026 · N450AN · Airbus A321253NX · Emergency Lighting > AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT 12WL BATTERY FAILED TEST - REPLACED EMERGENCY POWER SUPPLY UNIT 12WL BATTERY AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO ISSUES NOTED - [SDR AALA202610053008](https://openairdocs.org/sdr/AALA202610053008.md): Power Supply · no test · Oct 1, 2026 · N450AN · Airbus A321253NX · Emergency Lighting > AIRCRAFT IN BASE MAINTENANCE: EMERGENCY POWER SUPPLY UNIT 17WL FAILED TEST - REPLACED EMERGENCY POWER SUPPLY UNIT 17WL AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK WITH NO ISSUES NOTED - [SDR AALA202607293232](https://openairdocs.org/sdr/AALA202607293232.md): Battery · no test · Jul 28, 2026 · N450AN · Airbus A321253NX · Emergency Lighting > AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHTS INOPERATIVE AT THE FOLLOWING SEAT ROWS 3AC AND 4AC. ALSO, SEAT ROWS 8, 11, 12, 13, 16, 17, 18, 19, 20, 24, 25,3 7 (ALL ABC SIDE). MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 17WL (AALA202607290336) AND BATTERY ( - [SDR AALA202607290336](https://openairdocs.org/sdr/AALA202607290336.md): Power Supply · no test · Jul 28, 2026 · N450AN · Airbus A321253NX · Emergency Lighting > AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHTS INOPERATIVE AT THE FOLLOWING SEAT ROWS 3AC AND 4AC. ALSO, SEAT ROWS 8, 11, 12, 13, 16, 17, 18, 19, 20, 24, 25, 37 (ALL ABC SIDE). MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 17WL (AALA202607290336) AND BATTERY ( - [SDR AALA202607215985](https://openairdocs.org/sdr/AALA202607215985.md): Power Supply · no test · Jul 18, 2026 · N450AN · Airbus A321253NX · Emergency Lighting > AIRCRAFT WAS NOT GROUNDED: EMERGENCY POWER SUPPLY UNIT 17WL FAILED SYSTEM TEST. MAINTENANCE REPLACED EMERGENCY POWER SUPPLY UNIT 17WL PER AMM 33-51-38 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK. - [SDR AALA202604219281](https://openairdocs.org/sdr/AALA202604219281.md): Bottle · low pressure · Apr 17, 2026 · N450AN · Airbus A321253NX · Passenger/Crew Doors > AIRCRAFT WAS NOT GROUNDED: R1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PRESSURE LOW. SERVICED DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00. - [SDR AALA202603160015](https://openairdocs.org/sdr/AALA202603160015.md): Bottle · low pressure · Mar 13, 2026 · N450AN · Airbus A321253NX · Passenger/Crew Doors > AIRCRAFT WAS NOT GROUNDED: R1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PRESSURE LOW. SERVICED DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER JOB CARD 26L80052001. - [SDR AALA202602235535](https://openairdocs.org/sdr/AALA202602235535.md): Battery · no test · Feb 22, 2026 · N450AN · Airbus A321253NX · Emergency Equipment > AIRCRAFT WAS NOT GROUNDED: FORWARD FLIGHT ATTENDANT FLASHLIGHT TESTER BLINKING RED. MAINTENANCE REPLACED THE FLASHLIGHT BATTERY. - [SDR AALA202512051418](https://openairdocs.org/sdr/AALA202512051418.md): Bottle · low pressure · Dec 4, 2025 · N450AN · Airbus A321253NX · Passenger/Crew Doors > AIRCRAFT WAS NOT GROUNDED: L4 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PRESSURE LOW. SERVICED DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00. - [SDR AALA202512053599](https://openairdocs.org/sdr/AALA202512053599.md): Bottle · low pressure · Dec 4, 2025 · N450AN · Airbus A321253NX · Passenger/Crew Doors > AIRCRAFT WAS NOT GROUNDED: L1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PRESSURE LOW. SERVICED DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00. - [SDR AALA202510241622](https://openairdocs.org/sdr/AALA202510241622.md): Bottle · low pressure · Oct 23, 2025 · N450AN · Airbus A321253NX · Passenger/Crew Doors > AIRCRAFT WAS NOT GROUNDED: R1 DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PRESSURE LOW. SERVICED DOOR DAMPER AND EMERGENCY OPERATION CYLINDER PER AMM 52-10-00. - [SDR AALA202509057172](https://openairdocs.org/sdr/AALA202509057172.md): Power Supply · faulted · Sep 3, 2025 · N450AN · Airbus A321253NX · Emergency Lighting > AIRCRAFT WAS NOT GROUNDED: FLIGHT ATTENDANT REPORTS EMERGENCY LIGHTS CAME ON IN TAXI OUT THEN WENT OFF INFLIGHT, THE LIGHTS CAME BACK ON IN DESCENT AND STAYED ON. MAINTENANCE FOUND FAULT MESSAGE EPSU(16WL) OWD R AND REPLACED EMERGENCY POWER SUPPLY UNIT 16WL PE - [SDR AALA202412277099](https://openairdocs.org/sdr/AALA202412277099.md): Warning Light · illuminated · Dec 26, 2024 · N450AN · Airbus A321253NX · Extinguishing System > AIRCRAFT WAS NOT GROUNDED: FLIGHT CREW REPORTED THAT THE ENGINE 1 AGENT DISCHARGE LIGHT CAME ON BRIEFLY AND WENT OUT WITH NO FURTHER OCCURRENCE. MAINTENANCE ACCOMPLISHED TSM 26-21-00-810-819-A. A SATISFACTORY SYSTEM TEST WAS ACCOMPLISHED WITH NO DEFECTS NOTED - [SDR AALA202408085140](https://openairdocs.org/sdr/AALA202408085140.md): Pressure Switch · defective · Aug 7, 2024 · N450AN · Airbus A321253NX · Hydraulic Pressure Sensor > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING THAT IN FLIGHT THE RAT OUT ECAM LIGHT ILLUMINATED, THE LIGHT REMAINED ON FOR ABOUT 20 MINUTES THEN THE LIGHT WENT OUT. THE LIGHT RETURNED SEVERAL - [SDR AALA202408089636](https://openairdocs.org/sdr/AALA202408089636.md): Sensor · faulty · Aug 7, 2024 · N450AN · Airbus A321253NX · APU Oil System > AIRCRAFT WAS GROUNDED: AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO LAX DUE TO THE FLIGHT CREW REPORTING THAT IN FLIGHT THE RAT OUT ECAM LIGHT ILLUMINATED, THE LIGHT REMAINED ON FOR ABOUT 20 MINUTES THEN THE LIGHT WENT OUT. THE LIGHT RETURNED SEVERAL - [SDR AALA202404126537](https://openairdocs.org/sdr/AALA202404126537.md): Smoke Detector · false indication · Apr 11, 2024 · N450AN · Airbus A321253NX · Smoke Detection > AIRCRAFT WAS NOT GROUNDED: 3 HOURS INTO FLIGHT, FORWARD /MID LAVATORY FIRE WARNING ECAM. FLIGHT ATTENDANTS REPORTED NO ODOR OR SIGNS OF SMOKE OR VAPING IN ANY LAVATORY AT THE TIME OF THE ECAM. MAINTENANCE CHECKED ALL LAVATORY SMOKE DETECTORS FOR ABNORMALITY, P - [SDR AALA202401090773](https://openairdocs.org/sdr/AALA202401090773.md): Flashlight · unsecure · Jan 8, 2024 · N450AN · Airbus A321253NX · Emergency Equipment > AIRCRAFT WAS NOT GROUNDED: 3L FLASHLIGHT INOPERATIVE. MAINTENANCE RESECURED FLASHLIGHT IN HOLDER AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK. - [SDR AALA202311294429](https://openairdocs.org/sdr/AALA202311294429.md): Wire Harness · broken · Nov 29, 2023 · N450AN · Airbus A321253NX · Light System Wiring > AIRCRAFT WAS NOT GROUNDED: EMERGENCY LIGHT WIRES BROKEN AT SEAT ROW 1AC. REPLACED WIRE HARNESS FOR EMERGENCY LIGHT AT SEAT ROW1AC PER AMM 33-51-06 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK. - [SDR AALA202307140708](https://openairdocs.org/sdr/AALA202307140708.md): Fitting · stuck · Jul 12, 2023 · N450AN · Airbus A321253NX · Emergency Equipment > AIRCRAFT WAS NOT GROUNDED: FORWARD LEFT MAIN DOOR GIRT BAR FITTING / BRACKET STUCK DOWN. CLEANED AND LUBED GIRT BAR FITTING / BRACKET PER AMM 52-11-00. - [SDR AALA202303071727](https://openairdocs.org/sdr/AALA202303071727.md): Door · out of adjust · Mar 6, 2023 · N450AN · Airbus A321253NX · Fixed Inner Doors > AIRCRAFT WAS NOT GROUNDED: LAVATORY E ENTRY DOOR DIFFICULT TO OPEN AND CLOSE. MAINTENANCE ADJUSTED LAVATORY E ENTRY DOOR. - [SDR AALA202210211289](https://openairdocs.org/sdr/AALA202210211289.md): Door · out of adjust · Oct 20, 2022 · N450AN · Airbus A300* · Fixed Inner Doors > AIRCRAFT WAS NOT GROUNDED: RIGHT HAND AFT LAVATORY DOOR IS DIFFICULT TO OPEN AND CLOSE. MAINTENANCE ADJUSTED LAVATORY DOOR PER DIEHL CMM 25-43-24 AND ACCOMPLISHED A SATISFACTORY OPERATIONAL CHECK. - [SDR AALA202209272510](https://openairdocs.org/sdr/AALA202209272510.md): Duct · ruptured · Sep 23, 2022 · N450AN · Airbus A300* · Engine Cooling System > AIRCRAFT WAS GROUNDED: ON ETOPS WALKAROUND MAINTENANCE FOUND LOOSE PIECES OF HEAT PROOFING STICKING OUT OF THE #1 ENGINE THRUST REVERSER COWLING. UPON FURTHER INSPECTION FOUND THAT THE PNEUMATIC Y DUCT GOING TO THE HIGH PRESSURE TURBINE ACTIVE CLEARANCE CONTRO ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE n_number = 'N450AN' AND registry_match = 'registration' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/aircraft/N450AN/reports --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.